9221565 has 48 divisors (see below), whose sum is σ = 16555968. Its totient is φ = 4365312.

The previous prime is 9221519. The next prime is 9221567. The reversal of 9221565 is 5651229.

It is a happy number.

It is not a de Polignac number, because 9221565 - 2⁶ = 9221501 is a prime.

It is a super-2 number, since 2×9221565² = 170074522098450, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9221567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214434 + ... + 214476.

It is an arithmetic number, because the mean of its divisors is an integer number (344916).

Almost surely, 2^9221565 is an apocalyptic number.

It is an amenable number.

9221565 is a deficient number, since it is larger than the sum of its proper divisors (7334403).

9221565 is a wasteful number, since it uses less digits than its factorization.

9221565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 97 counting only the distinct ones).

The product of its digits is 5400, while the sum is 30.

The square root of 9221565 is about 3036.7029818538. The cubic root of 9221565 is about 209.7015033518.

The spelling of 9221565 in words is "nine million, two hundred twenty-one thousand, five hundred sixty-five".